Acquisition of Two Gas Source Stable Isotope Ratio Mass Spectrometers for the Stable Isotope Research Facility (SIRF) at Indiana University

该合同在24个月内提供30万美元的总资金，用于为稳定同位素研究设施（SIRF）购买两个气源同位素比质谱仪（IRMS）系统。这些工具将取代目前失效的工具。这些仪器将用于岩石学和矿石成因、地球微生物学、行星过程、水岩相互作用、环境评价、大气科学和考古学。这些仪器将支持化学、生物学、地理/大气科学、考古学和公共与环境事务学院的教师，以及管理SIRF的地质科学系。此外，外部用户（过去三年中约有80人）也使用了该设施。需要一种能够同时测量四束离子束的仪器来分析SF6。需要一种更标准的仪器，用于氧、碳和氮同位素分析。SIRF既有印第安纳大学的用户，也有校外机构的用户。学生的使用率也很高。SIRF为学生提供实践培训。培训包括样品准备和仪器操作。PI和副PI管理SIRF已有20多年。在为未被充分代表的研究生提供咨询方面，这两所私立大学都有着强大的背景。这些仪器将被安置在现有的SIRF空间中。该设施有两名全职技术研究人员。技术人员的工资、用品和维护来自补助金支持和外部用户费用。＊＊＊

1028102RipleyThis award provides $300,000 in total funding over 24 months to acquire two gas-source isotope ratio mass spectrometers (IRMS) systems for the Stable Isotope Research Facility (SIRF). The instruments will replace current failing ones. The instruments will be used for petrology and ore genesis, geomicrobiology, planetary processes, water-rock interaction, environmental assessment, atmospheric science and archaeology. The instrumentation will support faculty from Chemistry, Biology, Geography/Atmospheric Sciences, Archaeology and the School of Public and Environmental Affairs in addition to the Department of Geological Sciences which manages the SIRF. In addition, outsider users (~ 80 in the past three years) have utilized the facility. An instrument capable of four ion beams simultaneous measurement is requested for SF6 analysis. A more standard instrument is requested which will be used for oxygen, carbon, and nitrogen isotope analysis. The SIRF has users both at Indiana University and outside institutions. Student use is also high. The SIRF provides hands-on training for students. Training includes sample prep and instrument operation. The PI and co-PI have managed the SIRF for more than 20 years. Both Pis have a strong background in advising underrepresented graduate students. The instruments will be housed in the existing SIRF space. The facility has two full-time technical researchers. Technician salary, supplies and maintenance come from grant support and external user fees. ***